Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:2898 [inline]
 prepare_alloc_pages mm/page_alloc.c:4131 [inline]
 __alloc_pages_nodemask+0x22c/0x2720 mm/page_alloc.c:4179
------------[ cut here ]------------
WARNING: CPU: 1 PID: 15148 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30
Kernel panic - not syncing: panic_on_warn set ...

 alloc_pages_vma+0xd2/0x6d0 mm/mempolicy.c:2077
 shmem_alloc_page+0xe0/0x180 mm/shmem.c:1475
 shmem_alloc_and_acct_page+0x126/0x620 mm/shmem.c:1500
 shmem_getpage_gfp+0x302/0x28f0 mm/shmem.c:1777
 shmem_getpage mm/shmem.c:131 [inline]
 shmem_write_begin+0xeb/0x190 mm/shmem.c:2416
 generic_perform_write+0x1c9/0x420 mm/filemap.c:3055
 __generic_file_write_iter+0x227/0x590 mm/filemap.c:3180
 generic_file_write_iter+0x36f/0x650 mm/filemap.c:3208
 call_write_iter include/linux/fs.h:1778 [inline]
 new_sync_write fs/read_write.c:469 [inline]
 __vfs_write+0x44c/0x630 fs/read_write.c:482
 vfs_write+0x17f/0x4d0 fs/read_write.c:544
 SYSC_pwrite64 fs/read_write.c:632 [inline]
 SyS_pwrite64+0x116/0x140 fs/read_write.c:619
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x4196b7
RSP: 002b:00007f478ad7bf20 EFLAGS: 00000293 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00000000004afae8 RCX: 00000000004196b7
RDX: 0000000000000020 RSI: 0000000020011900 RDI: 0000000000000004
RBP: 0000000000000026 R08: 0000000000000000 R09: ffffffffffffffff
R10: 0000000000007000 R11: 0000000000000293 R12: 0000000000000004
R13: 0000000000000004 R14: 0000000020000398 R15: 0000000000000011
CPU: 1 PID: 15148 Comm: syz-executor.5 Not tainted 4.14.221-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x20/0x44 kernel/panic.c:547
 report_bug+0x208/0x250 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964
RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30
RSP: 0018:ffff88804f9bf7a0 EFLAGS: 00010282
RAX: 000000000000004a RBX: ffff88806930e650 RCX: 0000000000000000
RDX: 00000000000120fb RSI: ffffffff81441800 RDI: ffffed1009f37eea
RBP: ffff8880998d4540 R08: 000000000000004a R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880af0201c0
R13: ffff8880b1810300 R14: ffff88806930e658 R15: ffff8880679c6b58
 sysfs_create_dir_ns+0x16f/0x1d0 fs/sysfs/dir.c:59
 create_dir lib/kobject.c:71 [inline]
 kobject_add_internal+0x28b/0x930 lib/kobject.c:229
 kobject_add_varg lib/kobject.c:364 [inline]
 kobject_add+0x11f/0x180 lib/kobject.c:409
 device_add+0x33f/0x15c0 drivers/base/core.c:1884
 device_create_groups_vargs+0x1dc/0x250 drivers/base/core.c:2528
 device_create_vargs+0x3a/0x50 drivers/base/core.c:2568
 bdi_register_va.part.0+0x35/0x650 mm/backing-dev.c:879
 bdi_register_va+0x63/0x80 mm/backing-dev.c:895
 super_setup_bdi_name+0x123/0x220 fs/super.c:1297
 fuse_bdi_init fs/fuse/inode.c:990 [inline]
 fuse_fill_super+0x937/0x15c0 fs/fuse/inode.c:1110
 mount_bdev+0x2b3/0x360 fs/super.c:1134
 mount_fs+0x92/0x2a0 fs/super.c:1237
 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046
 vfs_kern_mount fs/namespace.c:1036 [inline]
 do_new_mount fs/namespace.c:2549 [inline]
 do_mount+0xe53/0x2a00 fs/namespace.c:2879
 SYSC_mount fs/namespace.c:3095 [inline]
 SyS_mount+0xa8/0x120 fs/namespace.c:3072
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x466019
RSP: 002b:00007fbf81e21188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466019
RDX: 0000000020004300 RSI: 0000000020002040 RDI: 0000000020000000
RBP: 00000000004bd067 R08: 0000000020000100 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007ffc88fda77f R14: 00007fbf81e21300 R15: 0000000000022000
Kernel Offset: disabled
Rebooting in 86400 seconds..